Comments on: Mounting UFS in read/write under Linux (debian)

By: Kegeruneku

Kegeruneku — Wed, 17 Aug 2011 15:07:01 +0000

Now for the challenge of the day :

I got a FreeBSD VM running over kvm, with a LVM backend for the storage. I am able to mount the root using kpartx however the slices are now properly detected, thus the majority of datas are missing.

Do you happen to know a way to detect slices on a Linux LV ?

By: Mount UFS filesystem on Ubuntu

Mount UFS filesystem on Ubuntu — Mon, 08 Aug 2011 16:33:58 +0000

[...] Some further research shows that the ufs module is (usually) compiled without write support. This link explains how to enable write-support with linux, and it seemed to work for him. If you have [...]

By: Sotamarsu

Sotamarsu — Wed, 08 Jun 2011 09:44:29 +0000

Should it be like this?

# cp /boot/config-2.6.27-2-686 .config <—

I think this is the right path?
# cp /boot/config-2.6.27-2-686 linux-source-2.6.27/.config

By: Ignace Mouzannar (ghantoos)

Ignace Mouzannar (ghantoos) — Sun, 19 Dec 2010 13:55:55 +0000

@Edmundo
I hope this works for you!

Thanks for your comment.
Ignace M -ghantoos-

By: Edmundo

Edmundo — Tue, 07 Dec 2010 18:36:14 +0000

Hi!

Cool, i haven’t tried yet but seems to will work, so I can see one irony:

FreeBSD – cannot mount EXT4 partitions from native way and included in the release (yet).
Linux – cannot mount UFS2 partitions from native way and included in the release (yet).

BUT! both systems can mount NTFS and FAT32 partitions… ironic, no?

I was googling for a cross-platform system file, to have one partition of data and two of O.S; but I only found that FAT is supported for many O.S. (that sucks). I KNOW that ext2 is supported for Unix but i think that is slow …

I’ll try this trick (recompile my linux’s kernel) and except the best, if not i’ll moved to NTFS or FAT (but very ungry)…

Regards, sorry for my bad english because I’m mexican :P.

By: freebsd8.0-STABLE + ext4

freebsd8.0-STABLE + ext4 — Tue, 20 Jul 2010 03:02:33 +0000

[...] not expect FreeBSD to support every Linux centric filesystem out there) So that does not work:? http://ghantoos.org/2009/04/04/mount…e-under-linux/ I guess i have to [...]

By: Phillip

Phillip — Fri, 20 Nov 2009 14:39:15 +0000

If you get the error “Read-only file system” when trying to write to the drive you need to do a fsck on
a solaris machine before mounting under linux. Looking at the code there are quire a few states that
remark the file system as readonly.

Run: dmesg | tail
if you see any of the following then it will be marked as readonly
ufs_read_super: fs is active
ufs_read_super: fs is bad
ufs_read_super: can’t grok fs_clean 0xFFFFFFF
ufs_read_super: fs needs fsck

if you see any of the following then it will be left as readwrite
fs is clean
fs is stable
fs is DEC OSF

By: thadk

thadk — Fri, 28 Aug 2009 09:00:03 +0000

for the record Solaris X86 ufs RW support is effectively not functional at all. Though it is mounted -rw, It simply reports read only file system for every operation & some people reported destruction with chmod.

By: links for 2009-07-30 « Where Is All This Leading To?

links for 2009-07-30 « Where Is All This Leading To? — Fri, 31 Jul 2009 00:33:28 +0000

[...] Place Ghantoos » Mounting UFS in read/write under Linux (debian) (tags: bsd ufs filesystems linux mount sysadmin kernel compile write) [...]

By: Garry

Garry — Wed, 24 Jun 2009 09:56:46 +0000

Nice! I esp. like the part about building your own kernel and rolling it up in a .deb all in a few commands. Simple and powerful.

By: FRLinux

FRLinux — Thu, 09 Apr 2009 18:16:18 +0000

Mortel ce petit tipaz, merci grand Ghantoos!